[FS#1023] iw does not build on a musl host

[LEDE Bugs]

The following task has a new comment added:

FS#1023 - iw does not build on a musl host
User who did this - Stijn Tintel (stintel)

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Looks like it's the empty version.sh that is causing this problem, but I have no idea why.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1023#comment3505